How many CVEs have patched isDevNull?

1 published CVEs changed isDevNull in opencontainers/runc, in 1 distinct patches totalling 42 changed lines, between 2025 and 2025.

What is the latest CVE that changed isDevNull?

CVE-2025-31133 (runc container escape via "masked path" abuse due to mount race conditions), published 2025-11-06, changed lines 1255 to 1296 of libcontainer/rootfs_linux.go.

How does isDevNull compare to the rest of opencontainers/runc?

opencontainers/runc has 16 CVEs with a located fix in total; 1 of them changed isDevNull.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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opencontainers/runc

Function

isDevNull

Name: isDevNull in opencontainers/runc: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

libcontainer/rootfs_linux.go

Last patched November 6, 2025

1

CVEs

That changed this function

1

Distinct patches

Backports counted once

42

Lines changed

Added plus removed

2025

Years

By CVE publication date

Overview

isDevNull in opencontainers/runc was changed by 1 published CVE fixes in 2025, in 1 distinct patches that added or removed 42 lines in total.

opencontainers/runc has 16 CVEs with a located fix in total, so 6% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed isDevNull, newest first, with the lines each fix touched.

runc container escape via "masked path" abuse due to mount race conditions
CVE-2025-31133 · lines 1255–1296 · +36 −6
High · CVSS 7.3
EPSS 0.8%2025-11-06

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Other functions in these files

Functions in the same file that CVE fixes also changed.

Other hotspots in the repository

Functions in opencontainers/runc changed by the most CVE fixes.

mountToRootfs6 CVEs · libcontainer/rootfs_linux.go mountCgroupV25 CVEs · libcontainer/rootfs_linux.go Init5 CVEs · libcontainer/standard_init_linux.go createDeviceNode4 CVEs · libcontainer/rootfs_linux.go mountCgroupV13 CVEs · libcontainer/rootfs_linux.go Close3 CVEs · libcontainer/rootfs_linux.go

All patched functions in opencontainers/runc

Frequently asked questions

Common questions about CVE fixes to isDevNull.

How many CVEs have patched isDevNull?: 1 published CVEs changed isDevNull in opencontainers/runc, in 1 distinct patches totalling 42 changed lines, between 2025 and 2025.
What is the latest CVE that changed isDevNull?: CVE-2025-31133 (runc container escape via "masked path" abuse due to mount race conditions), published 2025-11-06, changed lines 1255 to 1296 of libcontainer/rootfs_linux.go.
How does isDevNull compare to the rest of opencontainers/runc?: opencontainers/runc has 16 CVEs with a located fix in total; 1 of them changed isDevNull.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

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